KONCL. SV. VET. AKADKMIKNS MAN DLINGAJI. BAND 26. N:() 2. 81 



4. 1). coffsBiformis A. S. (1874). — V. broadly elliptical. L. 0,02:5 to 0,07 ; B. 0,oi to O.o.ts 

 111111. (Jeiitral iiodiilc ([iiadi-ate to reotangulai", with .'^omewliat divergent horns. Fuitows narrow, 

 close to the horns. Strite 8 to 10 in 0,oi mm., radiate at the ends, less distinct or imperceptible 

 (111 the furrows, not alternating with puncta or alveoli. — Nov. coffceiformi.i A. S. N. S. I). ]). 88 

 PI. 1 f. 22 PL II f. 1;}. Atl. VIII f. 7. 



Marine: North Sea! Gulf of Naples! Macassar Straits! ('alif. Santa Monica, fossil (Deb}' Coll.). 

 Var. (lenscsfriaid A. S. (1881). — Stria* 10 in O.oi mm. liunula' large. — Nar. coff. r. dens. 



A. S. Atl. LXX f. 54. 



Marine: Jamaica (Atl.). 



Var. suhcircidaris A. S. (1881). — V. orbicular. L. 0,04; B. 0,o34 mm. Stria' 8 in 0,oi 

 mm. - D. coff. snhc. A. S. Atl. LXX f. 53. 

 Marine: ? 



5. D. suborblfiiliiris CIre(}. (1857). — N. elliptical with broad, rounded^ends. L. 0,o4 to 0,o.t3; 



B. 0,024 to 0,032 mm. Central nodule large, ({uadrate; its horns divergent. Furrows linear, closely 

 following the horns, with faint continuations of the costte, or with a row of puncta. Costa; G to 9 

 in 0,01 mm. — Nav. Smithii var. suborhicularis Greg. D. of Clyde p. 487 PI. IX f. 17. Nav. suh- 

 orhicularis Donk. B. D. p. PI. I f. 9. A. S. N. S. D. PI. I f. 21. Atl. VIII f. 2, 3, 5, not 4. 



Marine: Davis Strait! North Sea! Corsica! Adriatic, Caspian Sea (Grun.), Ceylon! Mada- 

 gascar! Singapore! Labuan! Galapagos Islands! Cape Horn (Petit), Brazil (Atl.), Gulf of Mexico 

 (Atl.) North Carolina! Fossil: Hungary (Pant.), Sta Monica, Cal. ! 



Between D. coffceiforniis and D. suborhicularis there is no sharp distinction, the furrows 

 being broader, the horns of the central nodule more divergent and the costee usually coarser in 

 D. siihorbicularis than in D. coffee if or mis. 



(). D. compar Jan. (1881). — V. linear, with broad, truncate ends. L. 0,05; B. 0,oi mm. 

 Central nodule large, quadrate; its horns divergent at their basis. Furrows narrow, linear. Costa; 

 about 13 in 0,oi mm. — Nav. compar A. S. Atl. LXX f. 69. 



Marine: ? 



7. D. adveiia A. S. (1875). — V. linear-elliptical sometimes slightly constricted in the 

 middle. L. 0,08 to 0,i; B. 0,026 to 0,035 mm. Central nodule small, quadrate, its horns parallel, 

 approximate. Furrow narrow, linear. Costse 9 in 0,oi mm., almost parallel, continuing across the 

 fnrrow. — Nav. advena A. S. Atl. VIII f. 29; XII f. 41. 



Marine: Cape Good Hope (Atl.), Madagascar! Java (Deby Coll.)! Japan (Deby Coll.)! Sand- 

 wich Islands (Atl.). 



Var. recta Brun. a. ffiRiB. (1893). — L. 0, 1 to 0,12; B. 0,02 to 0,02.3 mm. Costa; 7 in 0,oi 

 mm. alternating with double rows of obscure puncta, about 14 in O.oi mm. — Nav. recta Brun. 

 a. H]5rib. I). d'Auvergne p. 90 PI. II f. 3. 



Marine: Puy du Mur, Aiivergne fossil (Br.). Morris Creek Conn. (Brim Coll.)! 



Var. sansegana Grun. (1875). — V. linear-elliptical. L. 0,053; B. O.ois mm. — Nar. sanse- 

 (jana Grun. A. S. Atl. VIII f. 27. 



Marine: Adriatic (Grun.). 



Var. parca A. S. (1875). — V. narrow, elliptical. L. 0,03 to 0,04.5; B. 0,oi6 mm. Furrows 

 narrowed at the ends. Costa. 10 to 14 in 0,oi mm. — Nav. parca A. S. Atl. VIII f. 20 to 22. 



Marine: North Sea, Samoa, Campeachy Bank (Atl.). 



8. D. siibniida A. S. (1875). — V. gently constricted, with elliptical segments. L. 0,o76; 

 B. 0,022; at the comtr. 0,oi.t ram. Central nodule small, its hoi'ns sti'aight, approximate. Furrows 

 linear, dilated in the middle. Costa 10 in 0,oi mm. — Nav. suhnuda A. S. Atl. XII f. 44. 



Marine: Mazatlan (Atl.). 



K. .Sv. Vet. Akad. Hand. Baud 2(5. N:o 2. 11 



